Dream Theater is an American progressive metal band formed in 1985.¹⁾

The band was originally named Majesty before changing their name to Dream Theater in 1989.²⁾

Dream Theater's music combines elements of progressive rock, metal, and classical music.³⁾

The band's founding members are John Petrucci (guitar), John Myung (bass), and Mike Portnoy (drums).⁴⁾

Dream Theater has had several lineup changes over the years, with James LaBrie (vocals) and Jordan Rudess (keyboards) joining the band in the 1990s.⁵⁾

They are known for their technical proficiency and complex song structures.⁶⁾

Dream Theater's debut album, “When Dream and Day Unite,” was released in 1989.⁷⁾

Their breakthrough album, “Images and Words,” released in 1992, featured the hit single “Pull Me Under.”⁸⁾

Dream Theater has released numerous concept albums, including “Metropolis Pt. 2: Scenes from a Memory” and “Six Degrees of Inner Turbulence.”⁹⁾

They have sold over 12 million records worldwide.¹⁰⁾

Dream Theater has won several awards, including a Grammy nomination for Best Metal Performance in 2013.¹¹⁾

The band's music often features extended instrumental sections and complex time signatures.¹²⁾

Dream Theater's longest song is “Octavarium,” which is over 24 minutes long.¹³⁾

They are known for their live performances, which often include improvisation and extended solos.¹⁴⁾

The band has its own annual music festival called “ProgPower USA.” ¹⁵⁾

Dream Theater's album “Images and Words” is widely regarded as one of the greatest progressive metal albums of all time.¹⁶⁾

They have released 15 studio albums, including “Awake,” “Scenes from a Memory,” and “Black Clouds & Silver Linings.”¹⁷⁾

Dream Theater's album “Metropolis Pt. 2: Scenes from a Memory” is a fan-favorite and often considered their best work.¹⁸⁾

They have recorded cover versions of songs by artists such as Pink Floyd, Elton John, and Metallica.¹⁹⁾

Dream Theater's album “Train of Thought” is heavier and more aggressive compared to their usual style.²⁰⁾

They released a rock opera called “The Astonishing” in 2016, which tells a dystopian futuristic story.²¹⁾

Dream Theater's drummer, Mike Portnoy, left the band in 2010 and was replaced by Mike Mangini.²²⁾

The band's album “Systematic Chaos” debuted at number 19 on the Billboard 200 chart.²³⁾

Dream Theater's album “A Dramatic Turn of Events” marked their first studio album without Mike Portnoy.²⁴⁾

They released a self-titled album, “Dream Theater,” in 2013, which received positive reviews from critics.²⁵⁾

Dream Theater's album “Distance over Time” was released in 2019 and showcased a return to their heavier roots.²⁶⁾

They have performed at prestigious venues worldwide, including the Royal Albert Hall in London and the Budokan in Tokyo.²⁷⁾

Dream Theater's guitarist, John Petrucci, is known for his virtuosic playing and signature “Liquid Tension” guitar technique.²⁸⁾

The band's bassist, John Myung, is known for his intricate bass lines and often takes a more understated role in the band's music.²⁹⁾

Dream Theater's keyboardist, Jordan Rudess, is a classically trained pianist and often incorporates classical elements into his playing.³⁰⁾